I've always been able to tell the difference between S/S & aluminium ports, even when they are too nasty to tell by looking, simply by picking them up - S/S is heavy, Aluminium isn't.

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I, myself, personally intend to continue being outspoken and opinionated, intolerant of all fanatics, fools and ignoramuses, deeply suspicious of all those who have "found the answer" and on my bad days, downright rude.